Wrist-pin



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1,873,345., Patented Mar. 29, 1921.

UNET@ STATES WALTER R. llIILLER, :F CHRISTIANA, PENNSYLVANIA.

WRIST-PIN.

, and useful Improvements in yVVristPinsr of which the following is a specification.

This invention relates to improvements in wrist pins for connecting the driving rod to the locomotive wheels and the principal obv )ect ofthe invention is to provide a removable part on the pin which may be removed and a larger one substituted' to take up the wear on the rod brasses. f

Another object of the invention is to provide means for preventing the removable part from rotating on the pin whenthe parts areV in 'assembled position.)

rlhis invention also consists in certain other features of construction and in the combination and arrangementof the several parts, to be hereinafter fully' described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

ln describing my invention in detail, reference will beY had to the accompanying y drawings wherein like characters denote like or corresponding parts throughout the .I

several views, and in which A Figure l is a sectional view showing the pin in use.

Fig. 2 is a cross section through the pin and its bushing.

Fig. 3 is a detail view.

In the drawings, i. indicates a part of the locomotive drive rod, 2 the portion of the drive wheel which carries the wrist pin. This pin, indicated at 3, has its cylindrical part l pressed into the bore in the wheel by hydraulic pressure as usualL The pin is vpro'- vided with a flange 5v which engages the outer face of the wheel around said bore. The projecting part 6 of the` pin is reduced in size and is slightly tapered and at its end this part has formed thereon the square part 7 and the screw threaded part 8. One

specification of Letters Patent.

Patented Mar. ee, ieei.

Application filed -Mai-ch 27, i920. serial No. 369,209.

ythe face 9 so that said bushing is prevented fromrotating on the pin. The outer end of the bushing is provided with a flange 12; i

A washer plate 13 has a square bore which` engages the square part '7 and the plate engages tlie outer end of thebushingto hold the same in place. sition by means of the nuts la on the screwthreaded part 8. i

As will be seen from Fig. l the brasses carried Vby the rod l engage said bushing l0 n and when said brasses become worn it is simply necessary to remove the bushing lOand substitute a larger one. Thus the wear in the rod brasses can'be kept `to a minimum and where split or sectional brasses are in use my invention will save the time and eX- pense of. reducing the brasses to t the pin.

lt isthought froml the foregoing description that the advantages and novel features of-rny invention will'be readily apparent.

I desire it to be understood that l may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

lhat l claim is :K-- A. wristr pin having a cylindrical portion for engaging the opening in the wheel yand a reduced outer part, a flange provided on said pin and engaging the outer face of the wheel around the bore, the projecting partof` said pin being reduced and slightly tapered at its plate on said pin. f

In testimony whereof l affix my signature.

WALTER R.' MILLER.

The plate is held in po- 

